Best Window Locks & Latches Under $100 (2026)
We scored products by value using build quality, adjustability, installation type, safety features, and price under $100
The Verdict
- Best Overall: ZRFCXE Window Locks, 12 Pack for Sliding Windows — Best for sliding windows: a 12-pack of compact locks that add child-safety and basic sliding-window security
- Best Value: Sliding Window Locks (10 Sets) with Keys — Best keyed locks: ten sets with keys for controlled access and added tamper resistance on sliding windows
This roundup covers durable window locks and latches under $100 designed to improve sliding-window, sliding-door, and fixed-window security and child-safety. Picks were chosen by scoring value based on materials, adjustability, installation type, and verified user feedback signals
Top Picks
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1
Best Overall ZRFCXE Window Locks, 12 Pack for Sliding Windows
Best for sliding windows: a 12-pack of compact locks that add child-safety and basic sliding-window security
Sliding window locks with keys for vertical and horizontal tracks. Easy to install, enhances security and prevents kids from opening widely; customers note solid fit and reliability
- two fixing holes for stability
- protects against heavy openings
- includes protection pads for window care
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2
ZRFCXE Window Locks, 12 Pack for Sliding Windows & Doors
Best multiuse sliding option: twelve locks sized for both sliding windows and doors to boost child-safety and access control
Sliding window locks with vertical key for mid-track visibility and added stability. Easy installation with two fixing holes and protection pads to minimize scratches. Customers note effective security, sturdy build, and easy fitting
- dual fixing holes for extra holding power
- security with vertical key
- protective padding to avoid scratches
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3
Sliding door security bar, adjustable 16–51 in
Best adjustable bar: telescoping security bar that secures patio and sliding doors with a wide length range
adjustable security bar for sliding doors and windows with telescoping design for versatile fit. provides an extra layer of protection and easy removal of the bottom lock bar for multi-use functionality. customers highlight ease of installation and sturdy build
- adjustable fit for most openings
- dual-function security bar
- easy installation
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4
Best Value Sliding Window Locks (10 Sets) with Keys
Best keyed locks: ten sets with keys for controlled access and added tamper resistance on sliding windows
Adjustable aluminum sliding window locks with key separation for vertical and horizontal tracks. Easy installation without drilling and designed for a wide range of tracks. Customers praise easy setup and durable security, though some note fit variations
- track-compatible sliding locks
- no-drill installation
- key-based security
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5
Segal S 4752 Fixed Window Guard
Best fixed guard: rigid window guard designed to block openings while maintaining interior visibility and child protection
Fixed window guard to prevent child falls; non-egress design with adjustable width. Customers note easy installation, sturdy build, and good value, though screws are disliked
- adjustable width 23-1/2 to 38 inches
- 0.048 inch thick white carbon steel
- 3-7/8 inch bar spacing on center
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6
Double Bolt Lock for Sliding Glass Doors
Best double-bolt option: two-point bolt design that reinforces sliding glass door security and reduces forced entry risk
A high-security lock for double sliding doors that helps prevent forced entry and keeps children safe. Customers report easy installation and improved security, though some note fit and instruction issues
- forces entry resistance
- discreet, low-profile design
- versatile for middle junction of doors
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7
Fixed Window Safety Guard 19x38 Adjustable Width (White)
Best interior safety guard: adjustable fixed guard for interior windows that prioritizes home-safety and a clean finish
Fixed window guard for interior mounting to prevent accidental falls. Narrow 3.8 inch bar spacing and adjustable width fit 19" height and 21"-38" wide windows. Customer notes easy installation and sturdy build
- adjustable width 21-38 inches
- narrow 3.8 inch bar spacing
- interior casing installation
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8
Window security bars adjustable, vertical inside, 17-33 in, 4 pcs
Best vertical bar set: four-piece adjustable vertical security bars for narrow openings and added deterrence
Adjustable window bars provide security while allowing fresh air. Easy to install with rubber feet for better placement; customers note sturdiness and adjustable fit
- adjustable length
- rubber feet for stability
- multi-purpose security bar
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9
Sliding Glass Door Security Bar for 17-50 in
Best patio-door bar: adjustable sliding-glass door bar built to resist prying and stabilize door movement
Adjustable security bar for windows/doors to improve safety while allowing airflow. Customers report easy assembly and reliable fit for sliding glass doors; length is adjustable with two extensions
- adjustable length
- includes extensions
- sturdy build
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10
WooFog Window Security Bar, adjustable inside, fits 11"–18" (White, 4 pcs)
Best compact bar set: short adjustable inside bars sold in a multi-pack for small windows and added interior security
Adjustable inside window security bars extend from 11 to 18 inches to secure sliding or vertical windows. Keeps air flowing while enhancing security; customers report sturdy construction and easy installation
- adjustable length 11"–18"
- inside-window security bar
- suitable for sliding and vertical windows